The highly anticipated Fujifilm X-E4 and Fujifilm GFX100S have been given probable release dates thanks to an official event announcement. Fujifilm's global X Summit event, which normally sees the arrival of new cameras and lenses, will kick off on January 27 at 8am EST / 1pm GMT, or midnight AEST on January 28. Fujifilm hasn't given us any further details on what exactly will be announced, but a series of generally reliable Fuji rumor leaks suggests that it will be a one-off event that will see the unveiling of these two cameras, plus three lenses. Fuji knows how to cheer up camera fans in January. So what exactly can we expect from these two new cameras? The Fujifilm X-E4 is expected to be the more versatile successor to 3's compact mid-range Fujifilm X-E2017. Looking for a small, stylish camera with superior smartphone image quality and the flexibility of interchangeable lenses? It's likely to work, thanks to the supposed addition of a new tilting screen and weather protection. Meanwhile, the Fujifilm GFX100S is expected to be the medium format successor to the Fujifilm GFX100 102MP. If you're unfamiliar with medium format cameras, they have huge sensors that are 67% larger than their full-frame rivals and were previously so large they were usually confined to the studio. However, the GFX100S will apparently be even smaller than the Fujifilm GFX50S, which is a relatively 'compact' camera given its sensor. The latter still weighs 920g, but that means the incoming GFX100S might be small enough to fit into a relatively small shoulder bag.